• 能源与动力工程 •

### 螺旋管内流动沸腾传热系数关联式拟合与误差分析

1. 1. 山东大学能源与动力工程学院, 山东 济南 250061;
2. 山东城市建设职业学院市政与环境工程系, 山东 济南 250103
• 收稿日期:2014-01-13 修回日期:2014-09-18 发布日期:2014-01-13
• 通讯作者: 韩吉田(1961-), 男, 山东莱阳人, 教授, 博士生导师, 主要研究方向为两相流传热.E-mail:jthan@sdu.edu.cn E-mail:jthan@sdu.edu.cn
• 作者简介:冀翠莲(1975-), 女, 山东菏泽人, 讲师, 博士, 主要研究方向为两相流传热传质.E-mail:jicuilian75@163.com
• 基金资助:
国家自然科学基金资助项目(51076084);省建设厅科技计划资助项目(2012yk045);山东省高等学校青年骨干教师国内访问资助项目。

### Fitting heat transfer coefficient correlation on flow boiling and error analysis for the helically coiled tube

JI Cuilian1,2, HAN Jitian1, YIN Jing2, CHEN Changnian1, REN Libo1, KONG Lingjian1

1. 1. School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China;
2. Municipal and Environmental Engineering Department, Shandong Urban Construction Vocational College, Jinan 250103, Shandong, China
• Received:2014-01-13 Revised:2014-09-18 Published:2014-01-13

Abstract: In order to develop flow boiling heat transfer coefficient correlations for helically coiled tube, based on the mechanism of flow boiling heat transfer. The Dn factor was introduced to consider complex pipeline effects on flow boiling heat transfer. The index of the Dn factor was gained by using the regression method. And relation of the ratio of the experimental and predicted values with the mass flow rate and vapor quality was further analyzed. A new heat transfer coefficient correlation of flow boiling in helically coiled tube was developed. The applicability for the heat transfer coefficient correlation was validated by experimental data of flow boiling heat transfer in helically coiled tube with R134a. The MRE and the RMSE were used to measure the accuracy of regression results, with MRE and RMSE being 8.23% and 0.532, respectively. The MRE and the RMSE were small, the regression results conformed to the requirements. Therefore, the method is very applicable, and is worthy of popularization.

• TK 121
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